Which of the Following Series of Events Are in the Correct

Which of the following series of events are in the correct order?

A) chemical binds to receptor, signal transduction pathway stimulates transcription activator, target gene is transcribed and translated
B) signal transduction pathway stimulates receptor, transcription activator is activated by target gene
C) chemical binds to receptor, target gene is transcribed and translated, signal transduction pathway stimulates proteins that bring about desired changes
D) signal transduction pathway activates receptor, chemical binds to receptor, target gene stimulates transcription activator
E) chemical binds to receptor, signal transduction pathway stimulates target gene, target gene stimulates transcription activator Signal transduction pathways are initiated by the binding of a chemical signal by a receptor, which initiates the pathway. The pathway usually ends with the stimulation of a transcription activator, which brings about the needed response in the cell by causing the transcription of needed genes.